diff --git a/scss/mixins/_grid.scss b/scss/mixins/_grid.scss
index 585c80f27d..3fc45f41ed 100644
--- a/scss/mixins/_grid.scss
+++ b/scss/mixins/_grid.scss
@@ -7,8 +7,7 @@
   margin-left: auto;
   padding-left:  ($gutter / 2);
   padding-right: ($gutter / 2);
-  @if $enable-flex {
-  } @else {
+  @if not $enable-flex {
     @include clearfix();
   }
 }
@@ -36,9 +35,7 @@
 
 @mixin make-col($gutter: $grid-gutter-width) {
   position: relative;
-  @if $enable-flex {
-    // Do nothing
-  } @else {
+  @if not $enable-flex {
     float: left;
   }
   min-height: 1px;